Robust Video Watermarking Scheme Based on Intra-Coding Process in MPEG-2 Style

The proposed scheme implemented a semi blind digital watermarking method for video exploiting MPEG-2 standard. The watermark is inserted into selected high frequency coefficients of plain types of discrete cosine transform blocks instead of edge and texture blocks during intra coding process. The selection is essential because the error in such type of blocks is less sensitive to human eyes as compared to other categories of blocks. Therefore, the perceptibility of watermarked video does not degraded sharply. Visual quality is also maintained as motion vectors used for generating the motion compensated images are untouched during the entire watermarking process. Experimental results revealed that the scheme is not only robust to re-compression attack, spatial synchronization attacks like cropping, rotation but also strong to temporal synchronization attacks like frame inserting, deleting, swapping and averaging. The superiority of the anticipated method is obtaining the best sturdiness results contrast to the recently delivered schemes.

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Digital Watermarking using Multiscale Ridgelet Transform

International Journal of Computer and Communication Technology ◽

10.47893/ijcct.2013.1188 ◽

2013 ◽

pp. 162-167

Author(s):

Manmit Kaur ◽

H. P. Sinha

Keyword(s):

Wavelet Transform ◽

Image Compression ◽

Edge Detection ◽

Discrete Cosine Transform ◽

Digital Watermarking ◽

High Frequency ◽

Digital Images ◽

Experimental Results ◽

Ridgelet Transform ◽

Frequency Bands

The multi-resolution watermarking method for digital images proposed in this work. The multiscale ridgelet coefficients of low and high frequency bands of the watermark is embedded to the most significant coefficients at low and high frequency bands of the multiscale ridgelet of an host image, respectively. A multi-resolution nature of multiscale ridgelet transform is exploiting in the process of edge detection. Experimental results of the proposed watermarking method are compared with the previously available watermarking algorithm wavelet transform. Moreover, the proposed watermarking method also tested on images attached by Discrete Cosine Transform (DCT) and wavelet based lossy image compression techniques.

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A Novel Printable Watermarking Method in Dithering Halftone Images

Advances in Multimedia ◽

10.1155/2016/4901609 ◽

2016 ◽

Vol 2016 ◽

pp. 1-17 ◽

Cited By ~ 1

Author(s):

Hui-Lung Lee ◽

Ling-Hwei Chen

Keyword(s):

Digital Watermarking ◽

High Frequency ◽

Visual Quality ◽

Experimental Results ◽

Halftone Images

Halftone images are commonly printed on books, newspapers, and magazines. How to protect the copyright of these printed halftone images becomes an important issue. Digital watermarking provides a solution for copyright protection. In this paper, we will propose a novel printable watermarking method for dithering halftone images. Based on downsampling and the property of a dispersed dithering screen, the method can resist cropping, tampering, and print-and-scan process attacks. In addition, comparing to Guo et al.’s method, the experimental results show that the proposed method provides higher robustness for the above-mentioned attacks and better visual quality in the high-frequency regions of halftone images.

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Design of a Digital Watermarking Scheme Based on Logistic Mapping

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.271-273.1334 ◽

2011 ◽

Vol 271-273 ◽

pp. 1334-1338

Author(s):

Yu Hua Zhu

Keyword(s):

Visual System ◽

Frequency Domain ◽

Discrete Cosine Transform ◽

Digital Watermarking ◽

Human Visual System ◽

Cosine Transform ◽

Logistic Mapping ◽

Dc Component ◽

Chaos Sequence ◽

Watermarking Scheme

A chaotic digital watermarking scheme based on logistic mapping was introduced. In the frequency domain, the chaos sequence embedded in DC component DC through using discrete cosine transform (DCT). Being of human visual system(HVS) masking properties, the watermarking adapt itself into the image, which ensure the watermark is invisible.

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Digital Video Watermarking for Copyright Labelling

International Journal of Computer and Information Technology(2279-0764) ◽

10.24203/ijcit.v10i5.157 ◽

2021 ◽

Vol 10 (5) ◽

Author(s):

Fitria Ilhami Ikromina Ami ◽

Erik Iman Heri Ujianto Erik

Keyword(s):

Fourier Transform ◽

Wavelet Transform ◽

Discrete Wavelet Transform ◽

Discrete Fourier Transform ◽

Discrete Cosine Transform ◽

Digital Watermarking ◽

Video Watermarking ◽

Discrete Wavelet ◽

Cosine Transform ◽

Digital Video Watermarking

Penggunaan konten multimedia di internet kini semakin berkembang, terutama dalam video digital. Pemalsuan, penipuan, dan penjarahan konten video menyebabkan masalah karena pasokan sumber daya untuk berbagi konten. Hak cipta menjadi hal yang krusial dalam video digital untuk menghindari manipulasi dari pihak yang tidak bertanggung jawab. Ada banyak cara yang bisa dilakukan untuk melabeli hak cipta ke dalam sebuah video. Salah satunya adalah digital watermarking. Pembuatan air digital digunakan untuk mencegah replikasi ilegal atau eksploitasi konten digital, melindungi konten digital, dan menghindari manipulasi multimedia secara ilegal. Penggunaan beberapa metode seperti Discrete Wavelet Transform (DWT), Discrete Cosine Transform (DCT), dan Discrete Fourier Transform (DFT) untuk pelabelan hak cipta video akan dibandingkan berdasarkan imperceptibility dan robustness setelah beberapa manipulasi diterapkan ke dalam video yang disisipkan-watermark. Dari segi imperceptibility, metode DWT menghasilkan nilai PSNR sebesar 45,62435 dB, metode DCT menghasilkan nilai PSNR sebesar 45.89422 dB, dan metode DFT menghasilkan nilai PSNR sebesar 45.77747 dB. Rerata PSNR dari ketiga metode tersebut adalah 45.76535 dB. Artinya, video yang disisipkan tanda air tampak mirip dengan yang disisipkan. Dengan demikian, dari percobaan dapat disimpulkan bahwa metode DWT, DCT, dan DFT yang diterapkan menunjukkan bahwa video yang diberi watermark masih dalam kualitas yang baik yaitu wajar dan memenuhi imperceptibility. Dari segi kekokohan, NC mean metode DCT adalah 0,63974, metode DCT adalah 0,755839, dan metode DFT adalah 0,745442. Hal ini menunjukkan bahwa hasil ekstraksi watermark dari ketiga metode tersebut sama dengan hasil watermark aslinya. Dengan kata lain, semua tanda air pada ketiga metode ini dapat diekstraksi dengan baik meskipun serangan dikirimkan kepada mereka. Dari tingkat uji imperceptibility dan robustness pada metode DWT, DCT, dan DFT, dapat dikatakan bahwa metode DCT lebih baik daripada metode DWT dan DFT karena performansinya yang tinggi pada PSNR dan NC.

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Evaluvation of Multiresolution Watermarking Algorithm

International Journal of Advanced Research in Computer Science and Software Engineering ◽

10.23956/ijarcsse.v7i8.29 ◽

2017 ◽

Vol 7 (8) ◽

pp. 85

Author(s):

S. Thabasu Kannan ◽

S. Azhagu Senthil

Keyword(s):

Digital Watermarking ◽

Wavelet Transformation ◽

Signal To Noise Ratio ◽

Rapid Development ◽

Threshold Value ◽

Discrete Wavelet ◽

Digital Production ◽

Common Framework ◽

Sampling Operation ◽

Watermarking Scheme

Now-a-days watermarking plays a pivotal role in most of the industries for providing security to their own as well as hired or leased data. This paper its main aim is to study the multiresolution watermarking algorithms and also choosing the effective and efficient one for improving the resistance in data compression. Computational savings from such a multiresolution watermarking framework is obvious. The multiresolutional property makes our watermarking scheme robust to image/video down sampling operation by a power of two in either space or time. There is no common framework for multiresolutional digital watermarking of both images and video. A multiresolution watermarking based on the wavelet transformation is selected in each frequency band of the Discrete Wavelet Transform (DWT) domain and therefore it can resist the destruction of image processing. The rapid development of Internet introduces a new set of challenging problems regarding security. One of the most significant problems is to prevent unauthorized copying of digital production from distribution. Digital watermarking has provided a powerful way to claim intellectual protection. We proposed an idea for enhancing the robustness of extracted watermarks. Watermark can be treated as a transmitted signal, while the destruction from attackers is regarded as a noisy distortion in channel. For the implementation, we have used minimum nine coordinate positions. The watermarking algorithms to be taken for this study are Corvi algorithm and Wang algorithm. In all graph, we have plotted X axis as peak signal to noise ratio (PSNR) and y axis as Correlation with original watermark. The threshold value ά is set to 5. The result is smaller than the threshold value then it is feasible, otherwise it is not.

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